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ZX-CA08B275042026年6月国际D卷练习 · 第 9 题
2026年6月国际D卷练习 · 原库模块 2 · Q9 参考答案
Each side of a 30-sided polygon has one of three lengths. The number of sides with length 4 centimeters (cm) is 5 times the number of sides n with length 8 cm. There are 6 sides with length 3 cm. Which equation must be true for the value of n?
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